For SAS Global Forum 2019, Ryan West, Elliot Inman, and Olivia Wright wrote a paper titled Kustomizing Your SAS Viya Engine Using SAS Studio Custom Tasks and D3.js.
In order to visualize the output of multiple cluster models created in the paper, they created a D3.js sunburst chart.
SGF 2019 Sunburst
For more information, check out this post where they describe how to visualize pseudo-hierarchies! Also, check out this post where they created the original version of this D3.js sunburst chart.